RESEARCH ON HARMONIC ELIMINATION IN THE OUTPUT OF A DC-AC CONVERTER OF A PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MULTIPLE REFERENCE FRAME THEORY AND LOW-PASS FILTER

Abstract

Permanent magnet synchronous motors (PMSM) find extensive applications in industrial servo control, particularly in high-precision tasks. However,
they suffer from periodic torque ripples due to torque, flux, and current variations, leading to periodic speed ripples in the system output, thereby affecting
control accuracy. These ripples are attributed to harmonics and interharmonics, which may induce operational issues in electrical and electronic devices.
This paper introduces an algorithm designed to mitigate the output harmonics of the PMSM motor controller using the multi-reference frame (MRF) theory
in conjunction with a low-pass filter (LPF). Furthermore, simulation results conducted in Matlab/Simulink are presented to validate the effectiveness of the
proposed algorithm.